AD5203ARU100-REEL

Overview

The AD5203ARU100-REEL is a quad-channel, 64-position digital potentiometer manufactured by Analog Devices Inc. It features four independent variable resistors with a nominal resistance of 100 kΩ and a temperature coefficient of 700 ppm/°C. The device operates on a single +2.7 V to +5.5 V supply and utilizes a 3-wire SPI-compatible serial interface for data loading at rates up to 10 MHz. Each channel includes a volatile latch that retains settings during power-down via the SHDN pin. The component is housed in a 24-lead Thin Shrink Small Outline Package (TSSOP) and is rated for operation within an extended industrial temperature range of –40°C to +85°C.

Feature Summary

• Quad-channel architecture providing four independent 6-bit digitally controlled variable resistors.
• 100 kΩ nominal end-to-end resistance with ±30% tolerance and 700 ppm/°C temperature coefficient.
• 3-wire SPI-compatible serial interface supporting daisy-chaining via the SDO output pin.
• Power shutdown mode reduces current consumption to less than 5 mA while maintaining latch data.

Applications

• Mechanical potentiometer replacement in embedded systems.
• Programmable filters, delays, and time constant adjustments.
• Volume control and audio panning circuits.
• Line impedance matching applications.
• Power supply voltage adjustment.

Procurement Notes

Verify the specific suffix 'RU' confirms the TSSOP-24 package type, as other suffixes indicate DIP or SOIC variants. Confirm the '100' designation corresponds to the 100 kΩ resistance value rather than the 10 kΩ option. Ensure the REEL packaging format aligns with automated assembly requirements. Check for RoHS compliance status as specifications may vary by manufacturing lot.

Selection Notes

Select this model when four independent channels are required in a compact surface-mount footprint. The 100 kΩ resistance value suits high-impedance signal paths where lower thermal noise is acceptable compared to the 10 kΩ variant. Verify that the 6-bit resolution (64 positions) meets the precision requirements of the application, as higher resolution options like the AD8403 offer 256 positions.

Part Context

This component belongs to the AD5203 family of quad-channel digital potentiometers. It serves as a direct electronic replacement for mechanical multi-gang potentiometers. The device is functionally similar to the AD8403 but offers lower 6-bit resolution compared to the AD8403's 8-bit architecture. It is designed for applications requiring programmable resistance without manual adjustment.

Replacement Considerations

For higher resolution needs, consider the AD8403 which provides 256 positions. For non-volatile memory retention across power cycles, the AD5232 series is a suitable alternative. Pin compatibility exists within the same package types across the AD5203 family variants.